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A. ARMSTRONG.

COMPUTING SCALE BEAM.

-No. 596,391. Patented Deo. 28,1897.

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No. 596,391. Patented Deo. 28,1897.

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UNITED STATES PATENT OEEicE.

ALEXANDER ARMSTRONG, OF MOUNDSVILIIE, IVEST VIRGINIA, ASSIGNOR OF ONE-IIALF 'IO VILLIAM F. WEAVER, OF SAME PLACE.

COMPUTlNG-SALE BEAM.

SPECIFICATION forming part of Letters Patent No. 596,391, dated December 28,1897.

Application filed May 28, 1897. Serial No. 638,564. (No model.)

To all whom t may concern.'

Be it known that I, ALEXANDER ARM- STRONG, a citizen of the United States, residing at Moundsville, in the county of Marshall and State of West Virginia, have invented certain new and useful Improvements in Oomputing-Scale Beams; and I do declare the following to be a full, clear, and exact description of the invention, such as Will enable oth.- ers skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in computing scale-beams; and the object is to provide a simple, eective, and reliable device of this character for expeditiously ascertaining the Weight and price of a given commodity.

To these ends the novelty consists in the construction, combination, and arrangement of parts, as Will be hereinafter more fully described, and particularly pointed out in the claim.

In the accompanying drawings the same reference-characters indicate the same parts of the invention.

Figure l is a front elevation of my improved computing scale-beam. Fig. 2 is a top plan view. Fig. 3 is a front end View of the same, and Fig. A is a transverse section of the same.

l represents a scale-beam comprising the parallel horizontal arms 2 and 3, connected at their inner ends by a vertical bar e and at their outer ends by the corresponding bar 5, terminating in the usual curved arm 6. The arm 2 is provided with the usual index, divided off into pounds and ounces, Which the poise 7 traverses. The lower arm 3 is divided into pounds only, and 8 represents the poise traversing said pound-scale.

9 represents a cylindrical barrel journaled in a rectangular horizontal frame lO on a lon gitudinal parallel shaft 1l, the outer end of which is provided with a pointer l2.

13 represents a thumb-button fixed to the pointer 12, and I4 represents a scale-dial iixed on the end of the frame 10, and it is provided with arbitrarilyarranged figures representing the price per pound of an ordinary article in daily use.

The barrel 9 is longitudinally divided into parallel sections arranged in pairs, the upper line of each pair representing the computed price of an article per ounce and the loiver line the computed price per pound.

Assuming that the. article to be sold retails at five cents per pound,the pointer l2 is moved to the iigure 5 on the dial lele. This rotates the barrel and brings the corresponding section in line With the iinger 7 of the poise 7, representing the ounces, and the linger S' of the poise S Will be in line with the pounds in the same section. If the article Weighs iive pounds, the )oise is moved along the scale until it balances, when it will be found that its finger points to 25 on the barrel, Which is the computed price of five pounds of any article at iive cents per pound. If the Weight of an article is to be determined in ounces, then the poise 7 is used, and when it is balanced its iinger will indicate the price of a given number of ounces.

The outer end of the barrel is provided With three or more annular series of iigures, the first of which contains the computed prices up to iifty pounds, the second to one hundred pounds, and the third to one hundred and ifty pounds, and are used When the corresponding loose Weights l5 l5 are used, each of which represents fifty pounds.

Although I have specifically described the construction and relative arrangement ofthe several elements of my invention, l do not desire to be confined to the same, as such changes or modifications may be made as clearly fall Within the scope of my invention Without departing from the spirit thereof.

Having thus fully described my invention, what I claim as new and useful, and desire to secure by Letters Patent of the United States, 1s-

A scale comprising a rotating computingbarrel 9,substantially as shown and described, and mounted on the shaft ll, a pointer 12 Xed on said shaft so as to rotate simultaneously with said barrel, a scale-dial 14 iixed intermediate said pointer and the contiguous end of said barrel, a duplex scale-beam l eoinprising the horizontal arnis 2 and 3, the former divided off to represent ounces and the latter to represent pounds, the poise 7 adjustabiy mounted on the arin 2 and provided With the iin ger 7 and the poise 8 similarly mounted on the arln 3 and provided wtih the finger S',

said fingers 7 and 8' being arranged to inde- Io pendentiy traverse said barrel, as and for the purpose set forth.

In testimony whereof I hereunto affix my signature in presence of two Witnesses.

ALEXANDER ARMSTRGNCr. fitnessesr K. R. MARTIN, C. A. WEAYEH. 

